To re-set your password, go to Settings in Gneo (tap once on the middle button and Settings is on the top right), and scroll down to Cloud Gneo. Tap on your account name/email and click on 'Logout'. Please note your email address before logging out.
When you have logged out, you will be taken back to the login screen. From here, you can select 'Forgot your password?' and enter your email address to be sent a link to re-set your password.